cloud-computing-msc-ai-examples/demo4-scale-out-destroy.py

# import getpass
# import os
# import libcloud.security

import time
from libcloud.compute.providers import get_driver
from libcloud.compute.types import Provider

# reqs:
#   services: nova, glance, neutron
#   resources: 2 instances (m1.small), 2 floating ips (1 keypair, 2 security groups)

# Please use 1-29 for X in the following variable to specify your group number. (will be used for the username,
# project etc., as coordinated in the lab sessions)

group_number = 30


# web service endpoint of the private cloud infrastructure
auth_url = 'https://private-cloud.informatik.hs-fulda.de:5000'
# your username in OpenStack
auth_username = 'CloudComp' + str(group_number)
# your project in OpenStack
project_name = 'CloudComp' + str(group_number)


# default region
region_name = 'RegionOne'
# domain to use, "default" for local accounts, "hsfulda" for RZ LDAP, e.g., using fdaiXXXX as auth_username
domain_name = "default"


def main():
    ###########################################################################
    #
    # get credentials
    #
    ###########################################################################

    # if "OS_PASSWORD" in os.environ:
    #     auth_password = os.environ["OS_PASSWORD"]
    # else:
    #     auth_password = getpass.getpass("Enter your OpenStack password:")
    auth_password = "demo"

    ###########################################################################
    #
    # create connection
    #
    ###########################################################################

    # libcloud.security.VERIFY_SSL_CERT = False

    provider = get_driver(Provider.OPENSTACK)
    conn = provider(auth_username,
                    auth_password,
                    ex_force_auth_url=auth_url,
                    ex_force_auth_version='3.x_password',
                    ex_tenant_name=project_name,
                    ex_force_service_region=region_name,
                    ex_domain_name=domain_name)

    ###########################################################################
    #
    # clean up resources from previous demos
    #
    ###########################################################################

    # destroy running demo instances
    for instance in conn.list_nodes():
        if instance.name in ['all-in-one', 'app-worker-1', 'app-worker-2', 'app-worker-3', 'app-controller',
                             'app-services', 'app-api-1', 'app-api-2']:
            print('Destroying Instance: %s' % instance.name)
            conn.destroy_node(instance)

    # wait until all nodes are destroyed to be able to remove depended security groups
    nodes_still_running = True
    while nodes_still_running:
        nodes_still_running = False
        time.sleep(3)
        instances = conn.list_nodes()
        for instance in instances:
            # if we see any demo instances still running continue to wait for them to stop
            if instance.name in ['all-in-one', 'app-worker-1', 'app-worker-2', 'app-worker-3', 'app-controller',
                                 'app-services', 'app-api-1', 'app-api-2']:
                nodes_still_running = True
        print('There are still instances running, waiting for them to be destroyed...')

    # delete security groups
    for group in conn.ex_list_security_groups():
        if group.name in ['control', 'worker', 'api', 'services']:
            print('Deleting security group: %s' % group.name)
            conn.ex_delete_security_group(group)


if __name__ == '__main__':
    main()